地下热水的水化学资料在判断断层中的应用——以聊城市城区地热田为例

Hydrochemistry material of underground hot water application in fault determination——Taking geothermal field in Liaocheng city as an example

聊城市城区西部临清拗陷区地下热水在水平方向上的水文地球化学特征具有明显的块段性,大致可分为F2断裂以东和F2断裂以西两个块段,这两个块段地下热水在主要离子组分、微量元素和特征系数等方面均有一定差异。本文根据地下热水水化学资料,判断出了F2断裂的大致位置,同时从地下热水水化学特征的块段性差异和地下热水的变质程度两个方面说明了F2断裂的判断依据。

Linqing depression area is in the west of the Liaocheng city. The hydrogeochemical characteristic of its underground hot water has obvious block section nature in the horizontal direction, so it can be divided into two block sections that are the east of F2 break and the west of F2 break. The underground hot water of these two block sections is different in the main ion component, trace element, characteristic coefficient and so on. The paper according to the hydrochemistry material of the underground hot water, determines the approximate location of F2 break, and explains its judgments from two aspects, the difference of the hydrochemistry character and the difference of the metamorphic grade of the underground hot water.